Application of Used Magnesite-Chrome Bricks in Cement Kiln to Converter Gun Mixture
Application of used magnesite-chrome bricks in cement kiln to converter patching material was studied.The reduction of Cr6+ to harmless Cr3+,and the effects of the composition based on used magnesite-chrome bricks and silicon powder on the structure and properties of the products were discussed.The samples were undergone heat treatment at 110 ℃ for 24 h,1100 ℃ for 3 h,and 1500℃for 3h,respectively.Bending strength,compressive strength,apparent porosity,bulk density,and linear change of the samples were determined.The results showed that the sample added with 20% of used magnesite-chrome bricks had higher strength,volume density and lower porosity.With increasing addition of silica powder the every performance index enhanced.The comprehensive performance reached the best when 3% of silica powder was added.Using of the used magnesite-chrome bricks from burning zone of cement kiln as converter gum mixture is feasible.
LI Zhihui LI Jing LUAN Xu JIN Shouguang ZHAO Changqing LIU Lu
University of Science and Technology Liaoning Anshan Liaoning 114051 China Tongda Refractory Technologies Co., Ltd.BeiJing 100000 China Yunnan Chihong Zn&GeCo.,Ltd. Qujing Yunnan 655000 China
国际会议
The 6th International Symposium on Refractories (第六届国际耐火材料会议)
郑州
英文
94-97
2012-10-18（万方平台首次上网日期，不代表论文的发表时间）